LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Well since motor is almost together, what do you think it will put down? *Reward*

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Old Jul 6, 2003 | 08:14 PM
  #76  
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my opinion would be to get the cam that works well N/A and you will be happy with N/A performance and dyno #'s.

If the N/A cam makes 15 more HP than the NOS cam while N/A, but 10 HP less on NOS than the NOS cam on NOS, just put a bigget pill in the NOS and there ya go.

If you are running a class that specifies a certain pill size, you might be better with a NOS cam but for most people, thety are not

Usually, the pistons/crank/rods will be limiting factor before it blows so wether you make 420 N/A and 600 on NOS (200 HP pills) or 405 N/A and 600 (175 HP pills) on NOS you will be able to reach the same point with either cam/nos pill that these parts can not handle. You might as well take advantage of the extra N/A power.

just my thoughts

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Old Jul 6, 2003 | 08:22 PM
  #77  
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Thats funny I dont see my cam on there.
I have these specs

Comp Cams 230XL Camshaft 230/236 duration @ .050", .510"/.521" lift with 1.5 rockers, .544"/.555" lift with 1.6 rockers. Almost as powerful as the XH, but easier on the valvetrain. only mine is 110 LSA and I didnt pay for the custom grind.

I'm running it with aluminum 1.6 rockers and 987 springs.



On the throttle body portmatching. ... hold the gasket up to the intake and center it on the bolt holes. draw a line on the inside of the gasket with a sharpie, grind till it disapears.
Old Jul 6, 2003 | 08:48 PM
  #78  
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dave, ur cam is on combo's site

MG, how will this perform?

Comp Cams 236HL Camshaft, 236/248 duration @ .050", .570"/.540" lift with 1.5 rockers, .608"/.576" lift with 1.6 rockers. Very aggressive nitrous cam, for large displacement engines. However with a 236 lobe for the intake that comes from this cam

Comp Cams 224XL Camshaft, 224/236 duration @ .050", .503"/.521" lift with 1.5 rockers, .536"/.555" lift with 1.6 rockers. Our most popular blower/nitrous cam, and for good reason.

Peak power? when will the powerband start? ive got a 6spd as well.

on the intake, im grinding the whole runner to the size of the gasket right? same on teh TB? just trace the gasket on it? cause ifd like to bore the tb holes out now in case i get a bigger tb later.
Old Jul 6, 2003 | 09:19 PM
  #79  
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well i dont really know but it is worth a guess

410rwhp and 440rwtq
Old Jul 6, 2003 | 09:27 PM
  #80  
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Be careful grinding the runners, You can grind them to match the gasket if the heads are ground the same way but if your heads are professionally ported chancers are he didnt hog it out that much.
Old Jul 6, 2003 | 09:28 PM
  #81  
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411.rwhp 438.rwtq
Old Jul 6, 2003 | 09:42 PM
  #82  
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also will combos springs that come in the cam kit handle this cam? i can remember the specs on them, all i know is they bind at 600.

236/242/112 .555/.587

236/248/112 .555/.576

which of these is gonna be the better cam?

i might have to start a new post with all the new details for the guessing!
Old Jul 6, 2003 | 09:57 PM
  #83  
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Originally posted by thewinner
also will combos springs that come in the cam kit handle this cam? i can remember the specs on them, all i know is they bind at 600.

236/242/112 .555/.587

236/248/112 .555/.576

which of these is gonna be the better cam?

i might have to start a new post with all the new details for the guessing!
you can upgrade the springs and retainers and all-
i got the springs good to 640 lift- you might as well too.
I also upgraded to titanium retainers
Old Jul 6, 2003 | 10:14 PM
  #84  
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I think comp reccomends .040 from bind and even that is a bit risky, most people like to see .050. so no way can you run either of those cams with those springs. Unless they are the 986 or 987 springs. Comp will tell you those are under rated and can be used for higher lift. either way, call comp cams, ask them.
Old Jul 6, 2003 | 10:53 PM
  #85  
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Go

419 rwhp 427 rwtq
________
Vapor Air One

Last edited by MarkyMark; Sep 14, 2011 at 12:37 PM.
Old Jul 7, 2003 | 12:21 AM
  #86  
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so about 160 or so for the 987 springs and retainers? what lift are these good too and how long they last? are they a direct swap, ive heard machining is needed?

i think i was talkin to bret about a bigger cam than my current one and the lift on the intake was 598, he told me that i should be ok as long as they are set up right, and i also have the r lifters.

At least i think it was bret who i was talking to

MG any thoughts about the cam?

Last edited by thewinner; Jul 7, 2003 at 12:30 AM.
Old Jul 7, 2003 | 12:37 AM
  #87  
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412/438
Old Jul 7, 2003 | 11:06 AM
  #88  
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ttt
Old Jul 7, 2003 | 11:38 AM
  #89  
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Originally posted by Dave Feerst
390RWHP 445RWTQ A cam with a early opening exhaust valve like that will almost always produce mot TQ then HP. 5.7 rods or 6 inch?
He's right. 385rwhp 433rwtq
Old Jul 7, 2003 | 12:15 PM
  #90  
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Where do you guys think the 236/242/112 .555/.587 will peak? How about the 236/248/112 .555/.576?

Which of these is gonna be the better cam?

I think i might try out combos dual spring kit.



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