350I camshaft spec

[chris59]

Hello guys and Gales,

I have to built an engine for my LHD TR8 coupé, and would like to create something with the same character as my 350I' engine.

So, the first step would be to find the camshaft profile, then the modifications to bring to the heads, find the right model of pistons, the list goes on and on....

This TR8 3L5 engine won't have the same injection system, neither SU carbs : I'm thinking about an injection who loks like a 4 barrel carb, what's your opinion ?

I want to built a road car, not a race car : imho, the 350I engine is perfect in this role.

[KKson]

I fitted a V8 Development's Stealth camshaft to my 3.9 litre V8. It was a fantastic camshaft, with okay bottom end grunt but revved all the way past 6300rpm. According to V8 Development's it will run standard, non-pocketted pistons. Its used on both EFi and carb engines. Give them a call and talk it through with them, they were very helpful. John Eales is also a guru on the V8s and will also give sound advice as he's built many hundreds of them.

[chris59]

This one ? http://www.v8developments.co.uk/camlongstealth.htm

Is there a way to find its profile, as the profile of the 350I camshaft, as I would like to compare ?

Give them a call is not an option : I'm not native English, it's far more easier to write and read than to speak

[keynsham]

I recently replaced my standard SD1 Vitesse camshaft with the TVR51 camshaft that I understand is used in the 4 litre TVR engines. It was recommended and supplied to me by TVRSSW and turns out it is a Kent Camshaft! It is nothing mad and runs in a completely standard engine. Lift is around 1mm greater than standard. It has made a difference but as my original cam was worn down evenly around 1.5mm then an improvement would be expected! Midrange is good but not a high revving cam and idle seems unaffected.

[chris59]

Hi, thanks for this, but without knowing the profile of an original TVR 350I camshaft, it's difficult to find the right one for my project.

Is this profile unknown ?

[adam quantrill]

It will be the same as the standard SD1 Vitesse EFi camshaft, so we just need the numbers for that.
Probably this: https://rimmerbros.com/Item--i-ETC6099 which you can no longer buy, but maybe Rimmer Bros have a data sheet.

[keynsham]

I was sent this... All Rover V8 cams

Make,Number,IO,IC,EO,EC,Dur,LSA,OL,Valve lift ,Ret(+) Adv(-),RPM Range,Class ,Comments ,
Crane,H-194,10,54,59,15,244/254,112,25,.400/.430,2.5,,Road ,Economy cam only. Not to be used with comp. ratio over 8.75:1 ,
Rover,ERR5250,14,70,64,20,267/264,115,34,0.416,3.0,,Production ,4.6-litre - Hi Torque Cam,
Crane,H-204,15,59,65,21,254/266,112,36,.430/.456,3.0,,Mild Road ,Improvement over standard cam. Can be straight swap. ,
JE,JE101,20,65,65,20,265/265,112,40,0.430,0.0,,Road ,,
Kent,H200,20,64,69,25,264/274,112,45,.435/.460,2.5,,Mild Road ,For pre-SD1. Also good for automatics. ,
Isky,621262,21,61,61,21,262/262,110,42,0.445,0.0,2000 - 5000,Mild Road ,,
TA Perf,TA212,21,64,69,31,265/280,110,52,0.473/.485,5.0,1900 - 4900,,,
Crane,H-216,21,65,71,27,266/278,112,48,.456/.480,3.0,,Road ,Excellent all rounder. Good power increase across rev. range. ,
Piper,HR270,22,62,64,28,264/272,109,50,421/.439,3.0,,Road ,Flexible with good mid and top end improvement. ,
Crower,50230,22,58,69,17,260/266,112,39,0.446/.451,-2.5,1500 - 4000,Mild Road ,,
V8Tuner,AS-H180,23,59,59,23,262/262,108,46,0.441,0.0,1000 - 4500,Mild Road ,Hi torque,
Isky,621270,26,64,64,26,270/270,109,52,0.470,0.0,2000 - 6000,Fast Road ,,
Piper,V8BP270i,26,66,66,26,272/272,110,56,0.420/0.420,0.0,1500 - 6000,Fast Road ,Hi Torque EFI +22hp,
Crower,50231,27,63,74,22,270/276,112,49,0.451/.477,-2.5,1800 - 4500,Mild Road ,,
Piper,V8BP270,28,64,64,28,272/272,108,56,0.420/0.420,0.0,1500 - 6000,Fast Road ,for Carbs +24hp,
Kent,H180,28,64,64,28,272/272,108,56,0.439,0.0,1000 - 4500,Mild Road ,Good for automatics ,
Rover,ERR3720,28,77,66,39,285/285,109,67,0.390,5.5,,Production ,4.0-litre,
Woody s ,RV10/RV15,28,72,76,32,288/280,112,60,0.448/.461,2.0,,,,
Rover,ERR5924??,30,75,67,37,285/285,109,67,0.390,3.5,800 - 4000,Production ,3.9-litre - use with CAMSHAFT THRUST PLATE ERR5926,
Rover,ERC2003,30,75,68,37,285/285,109,67,.390/.385,3.5,,Production ,3.5-litre SD1 / TR8,
Crower,50232,30,66,76,24,276/280,112,54,0.488/.490,-3.0,1800 - 4500,Fast Road ,D&D's Ulitmate Road Cam,
Kent,H214,31,73,80,34,284/294,112,65,.469/.494,1.5,1500 - 5000,Fast Road ,Very flexible. Good road camshaft. ,
SD1Web,,31.5,60.5,78.5,23.5,272/282,111,55,0.55,-4.0,1000-4500,Torque,,
Rover,ETC8686,32,73,70,35,285/285,109,67,0.390,1.5,800 - 3600,Production ,3.9-litre 36D 38D,
Woody s ,RV10/RV15-2,33,67,79,29,280/288,111,62,0.448/.461,-2.0,1500 - 5000,Fast Road ,,
SD1Web,,34,63,81,26,277/287,111,60,0.55,-4.0,1500-5000 ,Torque,,
Kent,H224,36,78,85,39,294/304,112,75,.494/.520,1.5,2000 - 5500,Road Rally ,Slight loss of flexibility.,
SD1Web,,37,64,80,31,281/291,109,68,0.55,-3.0,1500-5000 ,T&P,,
Kent,H234,38,80,87,41,298/308,112,79,.520 /.542,1.5,,Rally ,Poor low end but improves mid and top end power. ,
SD1Web,,40,70,80,40,290/300,108,80,0.55,0.0,2000-5500 ,Power,,
SD1Web,,40,66,83,33,286/296,109,73,0.55,-3.5,2000-5500 ,P&T,,
Piper,V8BP285,41,75,75,41,276/276,107,82,0.420/0.420,0.0,1500 - 6000,Fast Road ,Ultimate road cam. +30hp,
JE,JE102,43,79,79,43,302/302,108,86,0.500,0.0,3000 - 6500,Rally ,Good high end power. Peak torque 5000 rpm ,
SD1Web,,43.25,76.75,81.75,43.25,300/305,108,86.5,0.55,0.0,2500-6000,Power,,
Piper,HR285,44,72,72,44,296/296,104,88,0.439,0.0,2000 - 6500,Fast Road ,Ultimate road cam. Tractable but slightly lumpy tickover. ,
Kent,GPA,44,76,76,44,300/300,106,88,0.390,0.0,,Rally ,"Same valve lift as standard engine (.390"") ",
Oselli,RV8500,46,82,82,46,308/308,108,92,0.542,0.0,4000 - 7000,Race ,Ultimate hyd. camshaft.,

[adam quantrill]

Make	Number	IO	IC	EO	EC	Dur	LSA	OL	Valve lift	Ret(+) Adv(-)	RPM Range	Class	Comments
Crane	H-194	10	54	59	15	244/254	112	25	.400/.430	2.5		Road	Economy cam only. Not to be used with comp. ratio over 8.75:1
Rover	ERR5250	14	70	64	20	267/264	115	34	0.416	3.0		Production	4.6-litre - Hi Torque Cam
Crane	H-204	15	59	65	21	254/266	112	36	.430/.456	3.0		Mild Road	Improvement over standard cam. Can be straight swap.
JE	JE101	20	65	65	20	265/265	112	40	0.430	0.0		Road
Kent	H200	20	64	69	25	264/274	112	45	.435/.460	2.5		Mild Road	For pre-SD1. Also good for automatics.
Isky	621262	21	61	61	21	262/262	110	42	0.445	0.0	2000 - 5000	Mild Road
TA Perf	TA212	21	64	69	31	265/280	110	52	0.473/.485	5.0	1900 - 4900
Crane	H-216	21	65	71	27	266/278	112	48	.456/.480	3.0		Road	Excellent all rounder. Good power increase across rev. range.
Piper	HR270	22	62	64	28	264/272	109	50	421/.439	3.0		Road	Flexible with good mid and top end improvement.
Crower	50230	22	58	69	17	260/266	112	39	0.446/.451	-2.5	1500 - 4000	Mild Road
V8Tuner	AS-H180	23	59	59	23	262/262	108	46	0.441	0.0	1000 - 4500	Mild Road	Hi torque
Isky	621270	26	64	64	26	270/270	109	52	0.470	0.0	2000 - 6000	Fast Road
Piper	V8BP270i	26	66	66	26	272/272	110	56	0.420/0.420	0.0	1500 - 6000	Fast Road	Hi Torque EFI +22hp
Crower	50231	27	63	74	22	270/276	112	49	0.451/.477	-2.5	1800 - 4500	Mild Road
Piper	V8BP270	28	64	64	28	272/272	108	56	0.420/0.420	0.0	1500 - 6000	Fast Road	for Carbs +24hp
Kent	H180	28	64	64	28	272/272	108	56	0.439	0.0	1000 - 4500	Mild Road	Good for automatics
Rover	ERR3720	28	77	66	39	285/285	109	67	0.390	5.5		Production	4.0-litre
Woody s	RV10/RV15	28	72	76	32	288/280	112	60	0.448/.461	2.0
Rover	ERR5924??	30	75	67	37	285/285	109	67	0.390	3.5	800 - 4000	Production	3.9-litre - use with CAMSHAFT THRUST PLATE ERR5926
Rover	ERC2003	30	75	68	37	285/285	109	67	.390/.385	3.5		Production	3.5-litre SD1 / TR8
Crower	50232	30	66	76	24	276/280	112	54	0.488/.490	-3.0	1800 - 4500	Fast Road	D&D's Ulitmate Road Cam
Kent	H214	31	73	80	34	284/294	112	65	.469/.494	1.5	1500 - 5000	Fast Road	Very flexible. Good road camshaft.
SD1Web		31.5	60.5	78.5	23.5	272/282	111	55	0.55	-4.0	1000-4500	Torque
Rover	ETC8686	32	73	70	35	285/285	109	67	0.390	1.5	800 - 3600	Production	3.9-litre 36D 38D
Woody s	RV10/RV15-2	33	67	79	29	280/288	111	62	0.448/.461	-2.0	1500 - 5000	Fast Road
SD1Web		34	63	81	26	277/287	111	60	0.55	-4.0	1500-5000	Torque
Kent	H224	36	78	85	39	294/304	112	75	.494/.520	1.5	2000 - 5500	Road Rally	Slight loss of flexibility.
SD1Web		37	64	80	31	281/291	109	68	0.55	-3.0	1500-5000	T&P
Kent	H234	38	80	87	41	298/308	112	79	.520 /.542	1.5		Rally	Poor low end but improves mid and top end power.
SD1Web		40	70	80	40	290/300	108	80	0.55	0.0	2000-5500	Power
SD1Web		40	66	83	33	286/296	109	73	0.55	-3.5	2000-5500	P&T
Piper	V8BP285	41	75	75	41	276/276	107	82	0.420/0.420	0.0	1500 - 6000	Fast Road	Ultimate road cam. +30hp
JE	JE102	43	79	79	43	302/302	108	86	0.500	0.0	3000 - 6500	Rally	Good high end power. Peak torque 5000 rpm
SD1Web		43.25	76.75	81.75	43.25	300/305	108	86.5	0.55	0.0	2500-6000	Power
Piper	HR285	44	72	72	44	296/296	104	88	0.439	0.0	2000 - 6500	Fast Road	Ultimate road cam. Tractable but slightly lumpy tickover.
Kent	GPA	44	76	76	44	300/300	106	88	0.390	0.0		Rally	"Same valve lift as standard engine (.390"") "
Oselli	RV8500	46	82	82	46	308/308	108	92	0.542	0.0	4000 - 7000	Race	Ultimate hyd. camshaft.

One for the FAQ methinks!

I highlighted the row with the standard SD1 cam in the Rover V8 as supplied in the 350i from the factory.

This diagram should help with some of the terminology/abbreviations:

Edited by adam quantrill on Tuesday 28th November 16:56

[chris59]

Thanks to both of you guys.

Adam, if ETC6099 is the cam originally fitted to my 350I, allowing it to deliver about 197 hp, I think ERC2003, as a factory fitment to TR8 (with carburettors) is a "softer" cam : my first TR8, who was 100% original, was far less powerfull than a TVR 350I.

I'll follow your advice, and ask to RB if they have a datasheet for ETC6099.

[chris59]

Update : just to confirm that ERC2003 is the original fitment on a TR8, with 30/75/68/37.

It's a very "soft" cam compare to the one in a TVR350I, who's a shy more porwerfull than a SD1 Vitesse, who might be ETC6099.

[adam quantrill]

The plot thickens! I'm sure more will come out of the woodwork.

Also note that the EFi has an effect on driveability too (as opposed to carbs).

Another point is: what is your mileage on the 350i? Because cam lobe and lifter wear can soften the original over time, just a little.

[Ranger 6]

adam quantrill said:

Really good info

Many thanks for this - I'm building a 3.9 36D engine for my 90 and need a cam that will improve low end torque, but fits a std block/head. This will give me all I need to make a choice

[chris59]

adam quantrill said:

The plot thickens! I'm sure more will come out of the woodwork.

Also note that the EFi has an effect on driveability too (as opposed to carbs).

Another point is: what is your mileage on the 350i? Because cam lobe and lifter wear can soften the original over time, just a little.

I'll have a look at the Mileage this afternoon, Adam, but this 350I is pulling very seriously, so the wear, if there is any, must be unsignificant.

About injection, that's the reason why I talked about a "false" 4 barrel carb, in fact an injection system as sold by some companies (iin USA if I'm not wrong), or, eventually (I think it do exist ?) a pair of SUs lookalike with hiden injectors.