View Full Version : 1.5 vs 1.6 lifters


Jimmybyrd
May 15th, 01, 02:47 PM
Okay, I have a question? After a year and a half of accumulating pieces, my 'budget' rebuild is back in the engine compartment.

Here's the question.... I salvaged the cam from the old motor, a comp 280H. I liked the way it wound with a torker II intake, but I have a short stall speed (1000 over stock) automatic with a transkit in it (TH350).

I'm running exhaust friendly '993' castings with a 75cc chamber, headers and 2 1/2 inch duals with a crossover pipe. Mufflers are cherry bomb turbos. I have had the heads worked, with new springs, seals, and milling.

I changed to a GM aluminum manifold, for more low end with the edelbrock 600. This seems to give better throttle response, and better low end.

Will this manifold work with this cam, do i need 1/6 rockers, a smaller cam, or more stall speed? Compression should be in the 9.4 - 9.7 to one range.

By the way, a budget rebuild turned into over 2 grand real fast, I'd hate to leave it on the street. Just because it's in doesn't mean it stays in.

Any help would be appreciated.

Tracy Focht
May 16th, 01, 09:59 AM
Me personally, I would get a new cam and lifters for a new motor. Just that way I can rest assure that it will stay in there a long time without any problems.

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383 Speed-O-Motive stroker kit with Holley 750DP, RPM intake,Proform HEI dist.MSD6a box,World Products Sportsman II heads, ported and polished with 2.02/1.60 valves,64cc,TRW forged pistons with 10.7:1 compression, Comp Xtreme 284 cam,Crane pushrods, Comp Cam 1.6 full roller rockers,ATI damper, 40 series Flowmasters, 4.11 gears with TH350 and Hughes 3000 stall.Powertrax NoSlip Locker

sldhd
May 17th, 01, 09:03 AM
it doesn't seem like a bad combo.i would install a new cam but maybe the 270H instead. it would have been a little more responsive a torqueyer if you could have got a closed chamber head design like 186,461,462. the smaller cam will probably make just as much h.p. but with more torque for your motor.

ed kyle
May 18th, 01, 04:23 AM
Your combo is fine, but I would reinstall the Torker 2. I have run both manifolds at the strip with a combo close to yours and the T2 not only was quicker and faster, but it had better 60 foot times

Jimmybyrd
May 20th, 01, 02:00 AM
Ed,

The torker was awesome from 3000 up, but I put this manifold on knowing I'd compromise a little top end in exchange for low end torque. I live in a very hilly area, and I'd like to be able to cruise it too.

Thanks